LIMA, PERU—Last summer, 35 small, human-shaped sarcophagi were spotted with a powerful zoom lens camera in the Amazonas region of northern Peru. Now archaeologists have climbed the steep cliff where to the cemetery and confirmed the find. They think the small size of the sarcophagi, which face the remains of a town, indicates that they were used to hold the remains of mummified children. “We’re dealing with a discovery that is unique in the world,” said Manuel Cabañas López of the regional Ministry of Exterior Commerce and Tourism.